content/test/data/workers/queued_shared_worker_shutdown.html

   1 <html>
   2 <head>
   3 <script src="worker_utils.js"></script>
   4 </head>
   5 <body>
   6 <div id=result></div>
   7 <script>
   8 function log(message)
   9 {
  10   document.getElementById("result").innerHTML += message + "<br>";
  11 }
  12
  13 var url = document.location.toString();
  14 var num_workers = parseInt(url.substr(url.search("count=") + 6));
  15
  16 if (!num_workers) {
  17   log("No count= parameter provided - test aborted");
  18 } else {
  19   for (var i = 0; i < num_workers ; ++i) {
  20     createWorker(i);
  21   }
  22
  23   // Create two extra workers - these should both be queued, and launched as a
  24   // single instance when we shutdown a worker.
  25   createWorker(num_workers);
  26   createWorker(num_workers);
  27 }
  28
  29 var workers_created = 0;
  30 function createWorker(i) {
  31   var worker = new SharedWorker("worker_common.js?id=" + i);
  32   worker.port.postMessage("ping");
  33   worker.port.onmessage = function() {
  34     workers_created++;
  35     log("worker " + i + " started");
  36     if (workers_created == num_workers) {
  37        // We've created all of our workers. Let's shut down the most recent one
  38        // and see if we startup the queued worker.
  39        log("Shutting down worker " + i);
  40        worker.port.postMessage("close");
  41     } else if (workers_created == (num_workers+2)) {
  42        // created the last worker
  43        log("SUCCESS: queued worker created");
  44        onSuccess();
  45     }
  46   }
  47 }
  48 </script>
  49
  50 </body>
  51 </html>